Does anyone have heard again about this "new Jpeg format" that was supposed to be aimed to the pro market and that could not be edited?There were rumors that camera brands would adopt this format for press applications.

It's a nice thought but ultimately futile. Anyone can perform a screen grab and import an image into Photoshop, regardless of the original format.

The point for authentication is to have an audit trail for photos so the photographer can prove there was no editing done to it - important for police and PJs. Editing can always be done, but the authentication trail should reveal it.